The improvement of measurement efficiency in industry is getting more and
more important. Faster measurement procedures lead to more experiments in
less time and so reduce the costs. This master thesis is focusing on the
improvement of the conditioning unit on one of the test bench equipped with a
small turbocharged diesel engine.
In order to test engine according to manufacturer specifications, the air going in
the cylinder has to be at a certain temperature depending on the load and the
speed of the engine. The intercooler, (exchanger air/air), being not present on a
test bench, the intake air down-stream the turbocharger is cooled down by an
air-water heat exchanger. This water is either warmed up by a heater or cooled
down by a water-water heat exchanger. The temperature of the water in the
cooling/heating system is controlled in order to get the desired intake air
temperature. The cooling power is controlled by opening and closing a valve in a
cooling circuit and the heating power is depending of the amount electricity
consumed by the heater. Both of the cooling and heating units are controlled by
one PI governor in a global control strategy.
The cold hydraulic circuit has to be modified in order get a more precise flow in
the water-water exchanger to be able to control the intake air temperature. The
cooling power is the crucial part having more than 20 kW of cooling power
regarding the 6 kW of heating power. Once this step achieved, experiments will
be done in order to modify and optimize the control strategy to get the best
performances of the system.
Once this has been optimized, this control strategy will be adapted to other test
benches with different engine size in order to get better and faster
measurements.

BibTeX @mastersthesis{Nowaczyk2011,author={Nowaczyk, Thomas},title={Improvement of measurement efficiency at the engine test bench},abstract={The improvement of measurement efficiency in industry is getting more and
more important. Faster measurement procedures lead to more experiments in
less time and so reduce the costs. This master thesis is focusing on the
improvement of the conditioning unit on one of the test bench equipped with a
small turbocharged diesel engine.
In order to test engine according to manufacturer specifications, the air going in
the cylinder has to be at a certain temperature depending on the load and the
speed of the engine. The intercooler, (exchanger air/air), being not present on a
test bench, the intake air down-stream the turbocharger is cooled down by an
air-water heat exchanger. This water is either warmed up by a heater or cooled
down by a water-water heat exchanger. The temperature of the water in the
cooling/heating system is controlled in order to get the desired intake air
temperature. The cooling power is controlled by opening and closing a valve in a
cooling circuit and the heating power is depending of the amount electricity
consumed by the heater. Both of the cooling and heating units are controlled by
one PI governor in a global control strategy.
The cold hydraulic circuit has to be modified in order get a more precise flow in
the water-water exchanger to be able to control the intake air temperature. The
cooling power is the crucial part having more than 20 kW of cooling power
regarding the 6 kW of heating power. Once this step achieved, experiments will
be done in order to modify and optimize the control strategy to get the best
performances of the system.
Once this has been optimized, this control strategy will be adapted to other test
benches with different engine size in order to get better and faster
measurements.},publisher={Institutionen för tillämpad mekanik, Förbränning, Chalmers tekniska högskola},place={Göteborg},year={2011},series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2011:61},keywords={Engine, diesel, test bench, control, air conditioning, air temperature},}

RefWorks RT GenericSR ElectronicID 149393A1 Nowaczyk, ThomasT1 Improvement of measurement efficiency at the engine test benchT2 Improvement of the control strategy of the air conditioning unitYR 2011AB The improvement of measurement efficiency in industry is getting more and
more important. Faster measurement procedures lead to more experiments in
less time and so reduce the costs. This master thesis is focusing on the
improvement of the conditioning unit on one of the test bench equipped with a
small turbocharged diesel engine.
In order to test engine according to manufacturer specifications, the air going in
the cylinder has to be at a certain temperature depending on the load and the
speed of the engine. The intercooler, (exchanger air/air), being not present on a
test bench, the intake air down-stream the turbocharger is cooled down by an
air-water heat exchanger. This water is either warmed up by a heater or cooled
down by a water-water heat exchanger. The temperature of the water in the
cooling/heating system is controlled in order to get the desired intake air
temperature. The cooling power is controlled by opening and closing a valve in a
cooling circuit and the heating power is depending of the amount electricity
consumed by the heater. Both of the cooling and heating units are controlled by
one PI governor in a global control strategy.
The cold hydraulic circuit has to be modified in order get a more precise flow in
the water-water exchanger to be able to control the intake air temperature. The
cooling power is the crucial part having more than 20 kW of cooling power
regarding the 6 kW of heating power. Once this step achieved, experiments will
be done in order to modify and optimize the control strategy to get the best
performances of the system.
Once this has been optimized, this control strategy will be adapted to other test
benches with different engine size in order to get better and faster
measurements.PB Institutionen för tillämpad mekanik, Förbränning, Chalmers tekniska högskola,T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2011:61LA engLK http://publications.lib.chalmers.se/records/fulltext/149393.pdfOL 30